We have a brand new exclusive clip from the Dirty Jobs episode, Dirty Presidents, which fittingly airs on Election Day - Tuesday, November 4 at 9 PM ET on the Discovery Channel. Click below for some interesting history behind Presidential Thanksgivings.

Mike Rowe takes a look at some of the dirtiest jobs in America and discovers that many of our former Presidents had dirty jobs themselves. This Dirty Jobs Extravaganza will have you seeing our country's history in a completely new - and dirty - way.